import type { AxiosResponse, InternalAxiosRequestConfig } from 'axios';
import axios from 'axios';
import FileSaver from 'file-saver';

import { getToken } from '@/utils/auth';
import { blobValidate, tansParams } from '@/utils/ruoyi';
import cache from '@/plugins/cache';
import { decryptBase64, decryptWithAes, encryptBase64, encryptWithAes, generateAesKey } from '@/utils/crypto';
import { decrypt, encrypt } from '@/utils/jsencrypt';
import { HttpStatus } from '@/enums/resp-enum';
import { errorCode } from '@/utils/error-code';
import { errorMessage, errorNotification, warningConfirm, warningMessage } from '@/hooks/naive/ui-helper';

const encryptHeader = 'encrypt-key';

/**
 * 是否显示重新登录
 */
export const isReLogin = { show: false };

/**
 * 全局请求头
 */
export function globalHeaders() {
  return {
    Authorization: `Bearer ${getToken()}`,
    clientid: import.meta.env.VITE_APP_CLIENT_ID,
  };
}

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8';
axios.defaults.headers.clientid = import.meta.env.VITE_APP_CLIENT_ID;

/**
 * 创建 axios 实例
 */
const service = axios.create({
  baseURL: import.meta.env.VITE_APP_BASE_API,
  timeout: 50000,
});

/**
 * 请求拦截器
 */
service.interceptors.request.use(
  (config: InternalAxiosRequestConfig) => {
    // TODO 对应国际化资源文件后缀
    // config.headers['Content-Language'] = getLanguage();

    // 是否需要防止数据重复提交
    const isRepeatSubmit = config.headers?.repeatSubmit === false;
    // 是否需要加密
    const isEncrypt = config.headers?.isEncrypt === 'true';

    // 让每个请求携带自定义token 请根据实际情况自行修改
    const isToken = config.headers?.isToken === false;
    if (getToken() && !isToken) {
      config.headers.Authorization = `Bearer ${getToken()}`;
    }

    // get请求映射params参数
    if (config.method === 'get' && config.params) {
      let url = `${config.url}?${tansParams(config.params)}`;
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }

    if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
      const requestObj = {
        url: config.url,
        data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
        time: new Date().getTime(),
      };
      const sessionObj = cache.session.getJSON('sessionObj');
      if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
        cache.session.setJSON('sessionObj', requestObj);
      } else {
        // 请求地址
        const sUrl = sessionObj.url;
        // 请求数据
        const sData = sessionObj.data;
        // 请求时间
        const sTime = sessionObj.time;
        // 间隔时间(ms)，小于此时间视为重复提交
        const interval = 500;
        if (sData === requestObj.data && requestObj.time - sTime < interval && sUrl === requestObj.url) {
          const message = '数据正在处理，请勿重复提交';
          console.warn(`[${sUrl}]: ${message}`);
          return Promise.reject(new Error(message));
        } else {
          cache.session.setJSON('sessionObj', requestObj);
        }
      }
    }

    if (import.meta.env.VITE_APP_ENCRYPT === 'true') {
      // 当开启参数加密
      if (isEncrypt && (config.method === 'post' || config.method === 'put')) {
        // 生成一个 AES 密钥
        const aesKey = generateAesKey();
        config.headers[encryptHeader] = encrypt(encryptBase64(aesKey));
        config.data = typeof config.data === 'object' ? encryptWithAes(JSON.stringify(config.data), aesKey) : encryptWithAes(config.data, aesKey);
      }
    }

    // FormData数据去请求头Content-Type
    if (config.data instanceof FormData) {
      delete config.headers['Content-Type'];
    }

    return config;
  },
  (error: any) => {
    return Promise.reject(error);
  },
);

// 响应拦截器
service.interceptors.response.use(
  (res: AxiosResponse) => {
    if (import.meta.env.VITE_APP_ENCRYPT === 'true') {
      // 加密后的 AES 秘钥
      const keyStr = res.headers[encryptHeader];
      // 加密
      if (keyStr != null && keyStr != '') {
        const data = res.data;
        // 请求体 AES 解密
        const base64Str = decrypt(keyStr);
        // base64 解码 得到请求头的 AES 秘钥
        const aesKey = decryptBase64(base64Str.toString());
        // aesKey 解码 data
        const decryptData = decryptWithAes(data, aesKey);
        // 将结果 (得到的是 JSON 字符串) 转为 JSON
        res.data = JSON.parse(decryptData);
      }
    }
    // 未设置状态码则默认成功状态
    const code = res.data.code || HttpStatus.SUCCESS;
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode.default;
    // 二进制数据则直接返回
    if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
      return res.data;
    }
    if (code === 401) {
      if (!isReLogin.show) {
        isReLogin.show = true;
        warningConfirm('系统提示', '登录状态已过期，您可以继续留在该页面，或者重新登录', positive => {
          if (positive) {
            //     isReLogin.show = false;
            //     useUserStore().logout()
            //       .then(() => {
            //         location.href = `${import.meta.env.VITE_APP_CONTEXT_PATH}index`;
            //       });
          } else {
            isReLogin.show = false;
          }
        });
      }
      return Promise.reject('无效的会话，或者会话已过期，请重新登录。');
    } else if (code === HttpStatus.SERVER_ERROR) {
      errorMessage(msg);
      return Promise.reject(new Error(msg));
    } else if (code === HttpStatus.WARN) {
      warningMessage(msg);
      return Promise.reject(new Error(msg));
    } else if (code !== HttpStatus.SUCCESS) {
      errorNotification('错误', msg);
      return Promise.reject('error');
    } else {
      return Promise.resolve(res.data);
    }
  },
  (error: any) => {
    let { message } = error;
    if (message == 'Network Error') {
      message = '后端接口连接异常';
    } else if (message.includes('timeout')) {
      message = '系统接口请求超时';
    } else if (message.includes('Request failed with status code')) {
      message = `系统接口${message.substr(message.length - 3)}异常`;
    }
    warningMessage(message);
    return Promise.reject(error);
  },
);
// 通用下载方法
export function download(url: string, params: any, fileName: string) {
  // downloadLoadingInstance = ElLoading.service({ text: '正在下载数据，请稍候', background: 'rgba(0, 0, 0, 0.7)' });
  // prettier-ignore
  return service.post(url, params, {
    transformRequest: [
      (params: any) => {
        return tansParams(params);
      },
    ],
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    responseType: 'blob',
  }).then(async (resp: any) => {
    const isLogin = blobValidate(resp);
    if (isLogin) {
      const blob = new Blob([resp]);
      FileSaver.saveAs(blob, fileName);
    } else {
      const resText = await resp.data.text();
      const rspObj = JSON.parse(resText);
      const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode.default;
      errorMessage(errMsg);
    }
    // downloadLoadingInstance.close();
  })
    .catch((r: any) => {
      console.error(r);
      // ElMessage.error('下载文件出现错误，请联系管理员！');
      // downloadLoadingInstance.close();
    });
}

/**
 * 导出 axios 实例
 */
export default service;
